CN109485999A - Continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape and preparation method thereof - Google Patents
Continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape and preparation method thereof Download PDFInfo
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- CN109485999A CN109485999A CN201811227976.7A CN201811227976A CN109485999A CN 109485999 A CN109485999 A CN 109485999A CN 201811227976 A CN201811227976 A CN 201811227976A CN 109485999 A CN109485999 A CN 109485999A
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- kevlar fiber
- polypropylene
- continuous
- continuous kevlar
- fiber reinforced
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- 239000000835 fiber Substances 0.000 title claims abstract description 129
- 229920000271 Kevlar® Polymers 0.000 title claims abstract description 115
- 239000004761 kevlar Substances 0.000 title claims abstract description 115
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 78
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 78
- -1 polypropylene Polymers 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 238000007598 dipping method Methods 0.000 claims abstract description 24
- 229920000554 ionomer Polymers 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000003490 calendering Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- NNAZWLXQGXBKHL-UHFFFAOYSA-N [Zn].O=C1OC(=O)C=C1 Chemical compound [Zn].O=C1OC(=O)C=C1 NNAZWLXQGXBKHL-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 5
- 208000002173 dizziness Diseases 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 150000003384 small molecules Chemical class 0.000 abstract description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 9
- 239000002131 composite material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 240000002853 Nelumbo nucifera Species 0.000 description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 4
- 239000007822 coupling agent Substances 0.000 description 4
- 230000009881 electrostatic interaction Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 235000005206 Hibiscus Nutrition 0.000 description 2
- 235000007185 Hibiscus lunariifolius Nutrition 0.000 description 2
- 244000048199 Hibiscus mutabilis Species 0.000 description 2
- 235000003973 Hibiscus mutabilis Nutrition 0.000 description 2
- 244000284380 Hibiscus rosa sinensis Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006260 polyaryletherketone Polymers 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 208000026726 vitreous disease Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- HJSYJHHRQVHHMQ-ODZAUARKSA-L zinc;(z)-but-2-enedioate Chemical compound [Zn+2].[O-]C(=O)\C=C/C([O-])=O HJSYJHHRQVHHMQ-ODZAUARKSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/08—Conditioning or physical treatment of the material to be shaped by using wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
- B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
Abstract
The invention discloses a kind of preparation methods of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, comprising: 1) is uniformly mixed polypropylene, polypropylene-base ionomer and antioxidant, heating melting obtains melt blend；2) continuous kevlar fiber is drawn by creel, flattens, subsequently into charger, makes charge opposite with the polymer chain of ionomer on continuous kevlar fiber band；3) melt blend, rubbing dipping, calendering dipping, cooling and shaping, winding are coated on the continuous kevlar fiber handled through step 2).The invention also discloses continuous kevlar fiber reinforced polypropylene unidirectional prepreg tapes made from the above method.Products of the present invention have the characteristics that polypropylene to continuous kevlar fiber dipping sufficiently, porosity is low, interface cohesion is good, excellent in mechanical performance and in following process and use process without small molecule volatile matter discharge, can be used for the fields such as continuous fiber reinforced polypropylene sheet material, plate and special-shaped structure piece.
Description
Technical field
The invention belongs to continuous fiber reinforced thermoplastic composite material technical field more particularly to a kind of continuous Kevlar are fine
Tie up reinforced polypropylene unidirectional prepreg tape and preparation method thereof.
Background technique
Continuous fiber reinforced thermoplastic composite material has better structural behaviour than thermosetting resin based composites, resists
Impact and corrosion resistance are especially still able to maintain good mechanical property, and thermoplastic composite material under high temperature, high humility
The prepreg of material can long-term preservation, molding cycle is shorter, can complete recycling and reusing, therefore, in recent years increasingly by various countries
Attention, the application in markets such as automobile, sports apparatus, transport, industry, medical treatment, ships and light boats also develops rapidly.
Thermoplasticity unidirectional prepreg tape is to impregnate unidirectional continuous fiber with thermoplastic resin to form one-way tape, these materials are in height
It is formed again under temperature, the thermoplastic composite product of continuous fiber reinforcement may finally be prepared.It is high in prepreg tape preparation process
The thermoplastic resin of melt viscosity is most important to the performance of final products to the pre-preg of continuous fiber.Application No. is
200810201216.9 patent application by extruder fusion plastification thermoplastic resin, then by the thermoplastic resin of molten state
Pre-preg of the resin to continuous fiber is completed by staggeredly double extrusion dies of special designing, it is then further by dip roll again
The scheme of continuous fiber reinforced thermoplastic composite material prepreg is obtained after dipping, chill roll are cooling.However, the mould of special designing
Header structure is complicated, wherein be easy to exist to be easy to cause melt to thermally decompose, and continued access is relatively difficult after fibrous fracture at dead angle,
It causes the fluctuation of continuous fiber thermoplastic prepreg fiber content larger, to influence properties of product, reduces the versatility of equipment.
To avoid the above problem, application No. is 201710120299.8 patent application meters to smear dress by level-one application device, second level
It sets, the multistage parallel interaction application device of three-level application device and level Four application device composition, realizes outside macromolecule melt die head
Direct application process implements molten state thermoplastic resin to continuous fiber and dipping.But this multistage parallel interaction is smeared
Device composed structure is complicated, increases the difficulty of composite material prepreg manufacture craft.Application No. is 201610806836.X's
Thermoplastic resin is extruded into semi-vitreous strand using melt spinning method by patent application, and vertically drops down onto pretreated company
Continuous fiber surface, then strand is evenly arranged between continuous fiber in parallel by bonding roller effect, it is infiltrated by hot pressing, completes heat
The infiltration that plastic resin continuously infiltrates fiber.But spinning technique is more complicated compared to direct melting extrusion technique, in addition, such as
What control accurate semi-molten state strand is evenly arranged between reinforcing fiber in parallel, and is difficult the technical issues of solving.For from root
Thermoplastic melt viscosity height is solved in sheet, resin is sufficiently impregnated the problem of fiber difficulty, application No. is
201711316721.3 patent application also proposed powdery resin elder generation pre-preg continuous fiber, then remelted, roll-in is multiple
The technology of conjunction.But the range of choice of the thermoplastic resin for being applicable in the technology is restricted, and is such as only applicable to polyaryl ether
Ketone, polyaryletherketone ketone, aromatic polyetherimide；Polyarylsufone, polyarylene sulfide, aromatic polyamide, e pioic acid methyl ester, fluorination
Polymer.This is because most of common thermoplastic resin be all exist in the form of a particle, and particle toughness it is higher, from granular
It is machined to powdered, process is complicated, and cost is very high, therefore the technology is also difficult becomes general technology.In addition, application No. is
201410198628.7 patent application, which is disclosed, carries out pre-preg to continuous fiber using the suspension of thermoplastic resin, however
Material after dipping needs further to remove moisture therein, and technique is more complicated, if moisture removal is not thorough, remaining water
Divide and vaporized during the later period, hot pressing was compound, stomata easy to form deteriorates the performance of composite material.
Corona charging is that the corona discharge of air partial breakdown is caused to generate ion beam bombardment sample using a uniform electric field
Product, and make charge deposition in sample.The electrode of corona charging is usually that pin electrode charging or needle end are located at same level
The multistylus electrode of interior array distribution charges.The principle of corona charging is as shown in Figure 2.Add usually between ordinary electrode and needle electrode
Number kilovoltage, is allowed to that corona discharge occurs, this corona field is to the particle excitated generation charge of air gap, and charge deposition is in the table of sample
Face or near surface, to make surface charge and volume charge certain on sample band.Because corona charging apparatus is simple, operation side
Just, the features such as charge efficiency is high and distribution of charges is uniform, is widely used in production and processing.
Summary of the invention
Goal of the invention: providing that a kind of porosity is low, and the continuous kevlar fiber reinforced polypropylene of better mechanical property is unidirectional
Prepreg tape.
Simple and easy above-mentioned continuous kevlar fiber reinforced polypropylene is prepared it is a further object of the present invention to provide a kind of
The method of unidirectional prepreg tape.
Technical solution: the present invention provides a kind of preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape,
The following steps are included:
1) polypropylene, polypropylene-base ionomer and antioxidant are uniformly mixed, heating melting obtains melt blend；
2) continuous kevlar fiber is drawn by creel, is flattened, subsequently into charger, keep continuous Kevlar fine
Dimension takes the charge opposite with the polymer chain of polypropylene-base ionomer；
3) coating step 1 on the continuous kevlar fiber handled through step 2)) made from the melt blend, rubbing
Dipping, calendering dipping, cooling and shaping, winding obtain the continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape.
In step 1), polyacrylic 20~80g/10min of melt index；Polypropylene-base ionomer is polypropylene grafted Malaysia
(preparation of polypropylene grafted maleic anhydride zinc is referring to Master's thesis: Yuan Xianpei, polypropylene grafted MALEIC ACID, ZINC SALT ionomer for acid anhydrides zinc
Preparation and the research of modified polypropene/nylon-6 co-mixing system, master thesis, Dalian Polytechnic University, 2010, the 23rd
Page)；Antioxidant is antioxidant 1010；The mass ratio of polypropylene, polypropylene-base ionomer and antioxidant is 20~30: 1~5:
0.03~0.07.
In step 1), after mixing by polypropylene, polypropylene-base ionomer and antioxidant, heated by extruder molten
Melt, squeeze out, obtains melt blend；Extruder is double screw extruder, draw ratio 44, and extruder heating melting squeezes out
Temperature is 170 DEG C~190 DEG C, engine speed 500r/min~800r/min of the extruder, the vacuum of extruder exhaust section
Degree >=0.05MP.
In step 2), enter charger before, further include the continuous kevlar fiber is preheated to 180 DEG C~
200 DEG C of the step of；To 2~8m/min of hauling speed of continuous kevlar fiber；To guarantee that continuous kevlar fiber can take
Compared with multi-charge, to improve melt blend to the impregnating speed and wetting capacity of continuous kevlar fiber, fill corona charging
Set application voltage be 15kV~100kV, and make continuous kevlar fiber 1 at a distance from the pin electrode of charger~
2cm, the time that continuous kevlar fiber charges in charger are 0.5~2min；It polymerize with polypropylene-base ionomer
The opposite charge of object chain is positive charge.
In step 3), to 8~12m/min of hauling speed of continuous kevlar fiber；It is continuous triumphant being handled through step 2)
Cottonrose hibiscus, which is towed, ties up coating step 1) made from melt blend method particularly includes: step 1) is obtained into melt blend and is applied to painting
The surface of roller is covered, the gap that the continuous kevlar fiber handled through step 2) passes through applicator roll and pressing roller is drawn, is impregnated
It is compound；The temperature of applicator roll and pressing roller is respectively 170 DEG C~190 DEG C, and the pressure of pressing roller is 2~5MPa (applicator roll and pressure
Gap setting between tight roller is that continuous kevlar fiber can be made to pass through, and be applied to pressing roller on continuous kevlar fiber
Pressure be 2~5MPa)；Rubbing dipping is implemented by crumpling roller, and the temperature for crumpling roller is 170 DEG C~190 DEG C；Calendering leaching
Stain is implemented by stack, and the temperature of stack is 170 DEG C~190 DEG C, 2~5MPa of pressure, the surface of stack with connect
Ground contact, to eliminate the continuous kevlar fiber electrostatic remained on surface；Cooling and shaping is implemented by chill roll, cold
But 20 DEG C~50 DEG C of the temperature of roller, 1~2MPa of pressure；Winding is implemented by wind-up roll.
Another aspect of the present invention provides a kind of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, by weight
Including following components: 20~30 parts of polypropylene, 55-65 parts of kevlar fiber, 1~5 part of polypropylene grafted maleic anhydride zinc, antioxygen
0.03~0.07 part of agent, which is made by above-mentioned preparation method.
It is a feature of the present invention that passing through corona charging before coating melt blend to continuous kevlar fiber surface
Device deposits positive charge on the surface of continuous kevlar fiber monofilament.When surface be deposited with the continuous kevlar fiber of positive charge into
The gap for entering applicator roll and pressing roller, with pre-preg, compound tense in melt blend, molecular backbone band is negative in melt blend
Charge from aggressiveness under the action of electrostatic attraction, penetrate between the monofilament of continuous kevlar fiber.Since polypropylene-base is from poly-
The molecular backbone structure of object is that the acrylic resin in polypropylene, with mixture is fully compatible, in the work of polypropylene-base ionomer
Under, acrylic resin is substantially increased to the impregnating speed and wetting capacity of continuous kevlar fiber, finally realizes polypropylene
Melt is sufficiently impregnated continuous kevlar fiber.
The utility model has the advantages that the present invention is dipping object using the melt polypropylene containing polypropylene ionomer, it is dipped through corona
The continuous kevlar fiber for charging and having electrostatic charge opposite with polypropylene ionomer polymer chain, using in melt polypropylene
Strong electrostatic interaction between the polymer chain of polypropylene-base ionomer and continuous kevlar fiber realizes melt polypropylene
Continuous kevlar fiber is sufficiently impregnated, the continuous kevlar fiber reinforced polypropylene compound material of high-performance is prepared.Relative to
For the prior art, the present invention is based on melt impregnating process to prepare polypropylene unidirectional prepreg tape, and the more existing powder infusion of technique hangs
Turbid dipping is more simple.Compared with existing melt impregnation technology, (1) melt polypropylene and continuous triumphant cottonrose hibiscus are had the advantage that
It tows and ties up pre-preg compound tense, it is only necessary to conventional coating unit, without special extrusion die or coating mechanism, so that it may complete
The pre-preg of melt polypropylene and continuous kevlar fiber, impregnation technology and production operation are more simple；(2) present invention utilizes poly-
Electrostatic interaction between the polymer chain of acrylic ionomer and continuous kevlar fiber improves melt polypropylene to continuous
The impregnability of kevlar fiber improves resin and fiber impregnation with by coating small molecule coupling agent to kevlar fiber surface
The prior art of ability is compared, and during the preparation process, there is no the small molecule coupling agent decomposition because of the excessively high generation of temperature, influences to soak
The problem of stain effect, in addition, the problem of small molecule coupling agent pyrolytic is not present because of prepreg tape product of the invention, so
It is generated in post-production and use process without toxic volatile matter, it is more environmentally-friendly.(3) the present invention is based on the polymer chain of ionomer with
Electrostatic interaction between the continuous kevlar fiber of oppositely charged realizes that melt polypropylene increases continuous kevlar fiber
Abundant good dipping, Van der Waals force mentions between coupling agent and polymer melt of the prior art based on kevlar fiber surface
High polymer melt compares the impregnability of kevlar fiber, and electrostatic interactions are stronger, and effect is rapider, therefore, with
The prior art is compared, and polypropylene of the present invention is more abundant to the dipping of continuous kevlar fiber, pickling efficiency is high, prepreg tape product
Production efficiency it is higher.(4) continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape prepared by the present invention has polypropylene pair
Continuous kevlar fiber dipping is sufficiently, porosity is low, interface cohesion is good, excellent in mechanical performance and in following process and used
The features such as Cheng Zhongwu small molecule volatile matter discharges, which can be used for continuous fibre
Tie up the fields such as reinforced polypropylene sheet material, plate and special-shaped structure piece.
Detailed description of the invention
Fig. 1 is the preparation system schematic diagram of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape；
Fig. 2 is the schematic illustration of corona charging.
Specific embodiment
As shown in Figure 1, the preparation system of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape includes creel 1, exhibition yarn
It is device 2, baking oven 3, charger 4, double screw extruder 5, applicator roll 6, pressing roller 7, rubbing roller group 8, stack 9, cold
But roller 10 and wind-up roll 11, wherein creel 1, baking oven 3, charger 4, applicator roll 6, pressing roller 7, is rubbed with the hands exhibition yarn feeding device 2
It rubs roller group 8, stack 9, chill roll 10 and wind-up roll 11 to be successively disposed adjacent, the oblique of applicator roll 6 is arranged in double screw extruder 5
Top, applicator roll 6 are vertically arranged with pressing roller 7, and wherein pressing roller 7 is located at the lower section of applicator roll 6.
In Fig. 2, each appended drawing reference is respectively pin electrode 12, positive charge 13, sample 14 and grounding electrode 15.
Embodiment 1
A kind of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, is prepared as follows completion:
(1) polypropylene, the 3 parts by weight of polypropylene grafted maleic anhydride zinc for being 80g/10min by 30 parts by weight melt index
Uniform with 0.05 parts by weight antioxidant 1010 mixed at high speed, it is 44,180 DEG C of extrusion temperature, engine speed that draw ratio in Fig. 1, which is added,
Uniformly, obtained polypropylene-base melt blend is squeezed out to constant temperature 180 for mixing plasticizing in the double screw extruder 5 of 500r/min
DEG C applicator roll 6 surface；
(2) by the continuous kevlar fiber of 65 parts by weight by creel 1 with the speed drawing of 4m/min, by opening up yarn feeding device 2
Continuous kevlar fiber is flattened to after planar, continuing the continuous kevlar fiber of traction plane shape and passes through constant temperature to 190 DEG C
Baking oven 3 is preheated to 190 DEG C, then the charger 4 that the continuous kevlar fiber of traction plane shape is 100KV through overvoltage,
In charger, the distance of the pin electrode (anode) of continuous kevlar fiber plan range charger is 2cm, even
Time of the point by the charging of charger 4 on continuous kevlar fiber is 2min, and become positively charged lotus；
(3) the planar continuous kevlar fiber after charging is drawn across temperature is 180 DEG C of applicator rolls 6 and pressing roller 7
Interface, the pressure 3.5MPa of pressing roller 7 makes continuous kevlar fiber and polypropylene-base melt blend impregnate, is compound, then passes through
The further dipping, compound of the rubbing roller group 8 that excess temperature is 180 DEG C, continue to draw to temperature be 180 DEG C, pressure is 3.5MPa's
The further roll-in of stack 9 dipping after eliminating electrostatic, continues the chill roll 10 drawn to temperature is 20 DEG C, pressure is 1.5MPa,
Final molding, winding, prepared continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape porosity 0.054%.
Embodiment 2
A kind of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, is prepared as follows completion:
(1) polypropylene, the 1 parts by weight of polypropylene grafted maleic anhydride zinc for being 80g/10min by 20 parts by weight melt index
Uniform with 0.03 parts by weight antioxidant 1010 mixed at high speed, it is 44,190 DEG C of extrusion temperature, engine speed that draw ratio in Fig. 1, which is added,
Uniformly, obtained polypropylene-base melt blend is squeezed out to constant temperature 190 for mixing plasticizing in the double screw extruder 5 of 500r/min
DEG C applicator roll 6 surface；
(2) by the continuous kevlar fiber of 55 parts by weight by creel 1 with the speed drawing of 8m/min, by opening up yarn feeding device 2
Continuous kevlar fiber is flattened to after planar, continuing the continuous kevlar fiber of traction plane shape and passes through constant temperature to 200 DEG C
Baking oven 3 is preheated to 200 DEG C, then the charger 4 that the continuous kevlar fiber of traction plane shape is 15KV through overvoltage, in electricity
In dizzy charging unit, the distance of the pin electrode (anode) of continuous kevlar fiber plan range charger is 1cm, continuously
Time of the point by the charging of charger 4 on kevlar fiber is 1min, and become positively charged lotus；
(3) the planar continuous kevlar fiber after charging is drawn across temperature is 190 DEG C of applicator rolls 6 and pressing roller 7
Interface, the pressure 5MPa of pressing roller 7 makes continuous kevlar fiber and polypropylene-base melt blend impregnate, is compound, using
The rubbing roller group 8 that temperature is 190 DEG C further impregnates, is compound, continues the calendering drawn to temperature is 190 DEG C, pressure is 5MPa
The further roll-in of roller 9 dipping, eliminate electrostatic after, continue the chill roll 10 drawn to temperature is 50 DEG C, pressure is 2MPa, finally at
Type, winding, prepared continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape porosity 0.051%.
Embodiment 3
A kind of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, is prepared as follows completion:
(1) polypropylene, the 5 parts by weight of polypropylene grafted maleic anhydride zinc for being 50g/10min by 25 parts by weight melt index
Uniform with 0.07 parts by weight antioxidant 1010 mixed at high speed, it is 44,170 DEG C of extrusion temperature, engine speed that draw ratio in Fig. 1, which is added,
Uniformly, obtained polypropylene-base melt blend is squeezed out to constant temperature 170 for mixing plasticizing in the double screw extruder 5 of 650r/min
DEG C applicator roll 6 surface；
(2) by the continuous kevlar fiber of 60 parts by weight by creel 1 with the speed drawing of 2m/min, by opening up yarn feeding device 2
Continuous kevlar fiber is flattened to after planar, continuing the continuous kevlar fiber of traction plane shape and passes through constant temperature to 180 DEG C
Baking oven 3 is preheated to 180 DEG C, then the charger 4 that the continuous kevlar fiber of traction plane shape is 57.5KV through overvoltage,
In charger, the distance of the pin electrode (anode) of continuous kevlar fiber plan range charger is 1.5cm,
Time of the point by the charging of charger 4 on continuous kevlar fiber is 1min, and become positively charged lotus；
(3) the planar continuous kevlar fiber after charging is drawn across temperature is 170 DEG C of applicator rolls 6 and pressing roller 7
Interface, the pressure of pressing roller 7 is 2MPa, makes continuous kevlar fiber and polypropylene-base melt blend dipping, compound, then pass through
The rubbing roller group 8 that excess temperature is 170 DEG C further impregnates, is compound, continues the pressure drawn to temperature is 170 DEG C, pressure is 2MPa
After prolonging the further roll-in of roller 9 dipping, eliminating electrostatic, continue the chill roll 10 drawn to temperature is 20 DEG C, pressure is 1MPa, finally
Molding, winding, prepared continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape porosity 0.047%.
Embodiment 4
A kind of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, is prepared as follows completion:
(1) polypropylene, the 4 parts by weight of polypropylene grafted maleic anhydride zinc for being 70g/10min by 28 parts by weight melt index
Uniform with 0.06 parts by weight antioxidant 1010 mixed at high speed, it is 44,185 DEG C of extrusion temperature, engine speed that draw ratio in Fig. 1, which is added,
Uniformly, obtained polypropylene-base melt blend is squeezed out to constant temperature 185 for mixing plasticizing in the double screw extruder 5 of 700r/min
DEG C applicator roll 6 surface；
(2) by the continuous kevlar fiber of 62 parts by weight by creel 1 with the speed drawing of 6m/min, by opening up yarn feeding device 2
Continuous kevlar fiber is flattened to after planar, continuing the continuous kevlar fiber of traction plane shape and passes through constant temperature to 195 DEG C
Baking oven 3 is preheated to 195 DEG C, then the charger 4 that the continuous kevlar fiber of traction plane shape is 80KV through overvoltage, in electricity
In dizzy charging unit, the distance of the pin electrode (anode) of continuous kevlar fiber plan range charger is 1.8cm, even
Time of the point by the charging of charger 4 on continuous kevlar fiber is 2min, and become positively charged lotus；
(3) the planar continuous kevlar fiber after charging is drawn across temperature is 185 DEG C of applicator rolls 6 and pressing roller 7
Interface, the pressure of pressing roller 7 is 4MPa, is 185 DEG C using temperature with polypropylene-base melt blend dipping, compound
It crumples roller group 8 further impregnate, is compound, continues the further roller of stack 9 drawn to temperature is 185 DEG C, pressure is 1.8MPa
Pressure dipping after eliminating electrostatic, continues the chill roll 10 drawn to temperature is 40 DEG C, pressure is 1.8MPa, final molding, winding,
The porosity 0.055% of prepared continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape.
Continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape in the various embodiments described above is reduced into obtain standard batten, into
The test of row tensile strength, the standard of test are ASTM-D638, and every group is at least tested 10 battens, are averaged, test result is such as
Shown in table 1.
The mechanical property of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape prepared by each embodiment of table 1
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, which is characterized in that the preparation method
The following steps are included:
1) polypropylene, polypropylene-base ionomer and antioxidant are uniformly mixed, heating melting obtains melt blend；
2) continuous kevlar fiber is drawn by creel, flattens, subsequently into charger, makes continuous kevlar fiber band
The upper charge opposite with the polymer chain of the polypropylene-base ionomer；
3) coating step 1 on the continuous kevlar fiber handled through step 2)) made from the melt blend, rubbing leaching
Stain, calendering dipping, cooling and shaping, winding obtain the continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape.
2. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
It is, in step 1), the polyacrylic 20~80g/10min of melt index；The polypropylene-base ionomer connects for polypropylene
Branch maleic anhydride zinc；The antioxidant is antioxidant 1010；The mass ratio of the polypropylene, polypropylene-base ionomer and antioxidant
It is 20~30: 1~5: 0.03~0.07.
3. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
It is, in step 1), after mixing by polypropylene, polypropylene-base ionomer and antioxidant, by extruder heating melting, squeezes
Out, the melt blend is obtained；The extruder is double screw extruder, the extruder heating melting, the temperature of extrusion
It is 170 DEG C~190 DEG C, engine speed 500r/min~800r/min of the extruder.
4. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
It is, further includes that the continuous kevlar fiber is preheated to 180 DEG C~200 before entering charger in step 2)
DEG C the step of.
5. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
It is, in step 2) and step 3), to 2~8m/min of hauling speed of the continuous kevlar fiber.
6. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
It is, in step 2), the voltage of the charger is 15kV~100kV, the continuous kevlar fiber and the electricity
The distance of the pin electrode of dizzy charging unit is 1~2cm, and the time charged in the charger is 0.5~2min, with
The opposite charge of the polypropylene-base ionomer polymer chain is positive charge.
7. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
Be, in step 3), the coating step 1 on the continuous kevlar fiber handled through step 2)) made from the melt it is mixed
Close object method particularly includes: step 1) is obtained into the surface that melt blend is applied to applicator roll, draws the company handled through step 2)
Continuous kevlar fiber passes through the gap of applicator roll and pressing roller, impregnate compound.
8. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 7, feature
It is, the temperature of the applicator roll and pressing roller is respectively 170 DEG C~190 DEG C, and the pressure of pressing roller is 2~5MPa.
9. the preparation method of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape according to claim 1, feature
It is, in step 3), the rubbing dipping is implemented by crumpling roller, and the temperature of the rubbing roller is 170 DEG C~190 DEG C；
The calendering dipping is implemented by stack, and the temperature of the stack is 170 DEG C~190 DEG C, 2~5MPa of pressure, institute
The surface for stating stack is contacted with ground line；The cooling and shaping is implemented by chill roll, 20 DEG C of the temperature of chill roll~
50 DEG C, 1~2MPa of pressure；The winding is implemented by wind-up roll.
10. a kind of continuous kevlar fiber reinforced polypropylene unidirectional prepreg tape, the continuous kevlar fiber reinforced polypropylene list
By weight include following components to prepreg tape: 20~30 parts of polypropylene, 55-65 parts of kevlar fiber, polypropylene grafted horse
Come 1~5 part of acid anhydrides zinc, 0.03~0.07 part of antioxidant, which is characterized in that the continuous kevlar fiber reinforced polypropylene is unidirectionally pre-
Leaching band preparation method as described in any one of claim 1~9 is made.
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|---|---|---|---|---|
| WO2002081790A1 (en) * | 2001-03-27 | 2002-10-17 | Hiform As | Spread-mixed composite fibre |
| CN102070824A (en) * | 2010-11-18 | 2011-05-25 | 庄晓曦 | Antistatic polypropylene composition and preparation method thereof |
| CN104723582A (en) * | 2015-03-27 | 2015-06-24 | 解廷秀 | Manufacture equipment for continuous fiber reinforced thermoplastic composite material and application thereof |
| CN107866954A (en) * | 2016-09-26 | 2018-04-03 | 中国石油化工股份有限公司 | The manufacture method and equipment of continuous fiber reinforced thermoplastic resin prepreg tape |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002081790A1 (en) * | 2001-03-27 | 2002-10-17 | Hiform As | Spread-mixed composite fibre |
| CN102070824A (en) * | 2010-11-18 | 2011-05-25 | 庄晓曦 | Antistatic polypropylene composition and preparation method thereof |
| CN104723582A (en) * | 2015-03-27 | 2015-06-24 | 解廷秀 | Manufacture equipment for continuous fiber reinforced thermoplastic composite material and application thereof |
| CN107866954A (en) * | 2016-09-26 | 2018-04-03 | 中国石油化工股份有限公司 | The manufacture method and equipment of continuous fiber reinforced thermoplastic resin prepreg tape |
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Denomination of invention: Continuous Kevlar fiber reinforced polypropylene unidirectional pre impregnated tape and its preparation method Granted publication date: 20210803 Pledgee: Bank of China Limited Zhenjiang Runzhou Branch Pledgor: JIANGSU SUNENG NEW MATERIALS TECHNOLOGY CO.,LTD. Registration number: Y2024980003657 |
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